Add A Unit Test for CellSignalStrengthTdscdma

/*

 * Copyright (C) 2019 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.android.internal.telephony;

import static org.junit.Assert.assertEquals;

import static org.junit.Assert.assertFalse;

import static org.junit.Assert.assertTrue;

import android.os.Parcel;

import android.telephony.CellInfo;

import android.telephony.CellSignalStrengthTdscdma;

import android.test.AndroidTestCase;

import android.test.suitebuilder.annotation.SmallTest;

/** Unit tests for {@link CellSignalStrengthCdma}. */

public class CellSignalStrengthTdscdmaTest extends AndroidTestCase {

    private static final int RSSI = -95;

    private static final int BER = 3;

    private static final int RSCP = -106;

    @SmallTest

    public void testConstructor() {

        CellSignalStrengthTdscdma css = new CellSignalStrengthTdscdma(RSSI, BER, RSCP);

        assertEquals(RSSI, css.getRssi());

        assertEquals(BER, css.getBitErrorRate());

        assertEquals(RSCP, css.getRscp());

    }

    @SmallTest

    public void testInvalidConstructor() {

        CellSignalStrengthTdscdma css = new CellSignalStrengthTdscdma(-1, -1, -1);

        assertEquals(CellInfo.UNAVAILABLE, css.getRssi());

        assertEquals(CellInfo.UNAVAILABLE, css.getBitErrorRate());

        assertEquals(CellInfo.UNAVAILABLE, css.getRscp());

    }

    @SmallTest

    public void testDefaultConstructor() {

        CellSignalStrengthTdscdma css = new CellSignalStrengthTdscdma();

        assertEquals(CellInfo.UNAVAILABLE, css.getRssi());

        assertEquals(CellInfo.UNAVAILABLE, css.getBitErrorRate());

        assertEquals(CellInfo.UNAVAILABLE, css.getRscp());

    }

    @SmallTest

    public void testEquals() {

        assertTrue(new CellSignalStrengthTdscdma(RSSI, BER, RSCP).equals(

                        new CellSignalStrengthTdscdma(RSSI, BER, RSCP)));

        assertFalse(new CellSignalStrengthTdscdma(RSSI, BER, RSCP).equals(

                    new CellSignalStrengthTdscdma(RSSI, BER, RSCP + 1)));

    }

    @SmallTest

    public void testParcel() {

        CellSignalStrengthTdscdma css = new CellSignalStrengthTdscdma(-1, -1, -1);

        Parcel p = Parcel.obtain();

        css.writeToParcel(p, 0);

        p.setDataPosition(0);

        CellSignalStrengthTdscdma newCss = CellSignalStrengthTdscdma.CREATOR.createFromParcel(p);

        assertEquals(css, newCss);

    }

    @SmallTest

    public void testLevel() {

        CellSignalStrengthTdscdma css = new CellSignalStrengthTdscdma(RSSI, BER, RSCP);

        assertEquals(1 /* POOR */, css.getLevel());

    }

}